Techniques for thruster system control for a pontoon boat or other watercraft. A thruster system may comprise a plurality of thrusters used to control movement of the pontoon boat in addition to an outboard prime mover. The thrusters may be fixed and/or steerable thrusters. In examples, the thrusters may be retracted based on identifying a condition in which the thrusters may be damaged. The thrusters may be deployed based on identifying a condition in which the thrusters may be used to recharge an associated energy source. User input to control the thrusters may be adapted to account for external forces acting on the pontoon boat. A user interface is provided with which to control the thruster system, via which an operator manipulates a movement intent line to control the thruster system. The user interface may further comprise obstacle indicators, thereby enabling the operator to maneuver the pontoon boat accordingly.

Multi-Purpose Floating Structures are special design in water floating structures applications, long lasting and easy for replacement. It is the most economical and safe way to build a floating structure to suit for anything that are floated on the water. The mounting frames are designed with capability of ensuring system integration, components replication, cost reduction and modularization by using recycled plastic drums or other floating containers.

A propulsion device for marine vessel. A base is configured to be coupled to the marine vessel, the base having sides that extend downwardly from the marine vessel. A propulsor is pivotally coupled to the base and pivotable into and between a deployed position and a stowed position. The propulsor comprises a propeller having a hub with blades extending away therefrom. The propulsor is configured to propel the marine vessel in water when in the deployed position by rotating the propeller. An alignment device aligns the blades of the propeller between the sides of the base when the propulsor is in the stowed position.

An agricultural amphibious bait feeding boat includes a boat body. A bait feeding device is fixed to one end of the boat body, and a propulsion device is fixed to the other end of the boat body. The boat body includes two foam floating bodies, foam fixing carbon rods, a transverse carbon rod, tube ferrule fixing assemblies, and tee joints. The two foam floating bodies include a left foam floating body and a right foam floating body, the foam fixing carbon rods parallel to each other are respectively arranged above the two foam floating bodies, and the foam floating bodies and the foam fixing carbon rods are fixed through the tube ferrule fixing assemblies The transverse carbon rod is connected to the foam fixing carbon rods through the tee joints, and the left foam floating body and the right foam floating body are fixedly connected to each other.

A hydrofoil system provides lift to a motor-powered displacement hull without raising the hull out of the water. The hydrofoil system includes a pair of laterally opposed forward hydrofoil wings positioned respectively on the first pontoon and second pontoon forward a center of gravity of the hull. The forward hydrofoil wings extend laterally inboard and downwards towards each other. The hydrofoil system also includes a pair of laterally opposed aft hydrofoil wings positioned near the stern of the hull on the first pontoon and second pontoon respectively. The aft hydrofoil wings extend laterally inboard towards each other and have an upper surface with convex curvature that extends from the respective first pontoon or second pontoon to an inboard terminal end thereof.

A system and method for automatically joining a cut blank has a mandrel and clamps to conform the cut blank to the mandrel. The clamps include band clamps and pad clamps that pivot about axes that are obliquely angled with respect to the centerline of the mandrel. The clamp axes on one side of the centerline are a mirror image to the clamp axes on the other side. The cut blank has a line of symmetry and is clamped to the centerline of the mandrel with a locator bar. The clamps are then moved to a clamped position. In the clamped position, one edge of the cut blank meets another edge, and a robotic welder joins the edges.

An accessory system for a pontoon boat includes a support comprising longitudinal members and at least one support crosspiece connected between the longitudinal members, where the support can be attached to a structural component of a pontoon boat and move between a stowed position and a deployed position. An accessory component includes one or more hangers with a hook constructed to engage the support. A support portion is connected to the accessory component and extends transversely away from the one or more hangers. In use, the support can be deployed along a side of a pontoon with the accessory component removably attached to the support. The accessory component can be used to support a platform, a grill, a cooler or other accessory alongside the pontoon boat.

An assembly for a watercraft according to an example of the present disclosure includes, among other things, a flotation device including an elongated slot and a mount that has first and second flanges extending outwardly from a bracket body. The first flange is configured to be mechanically attached to a frame, and the second flange is slideably received in the slot to secure the flotation device. A method of assembly for a watercraft is also disclosed.

An assembly for a watercraft according to an example of the present disclosure includes, among other things, a flotation device including an elongated slot and a mount that has first and second flanges extending outwardly from a bracket body. The first flange is configured to be mechanically attached to a frame, and the second flange is slideably received in the slot to secure the flotation device. A method of assembly for a watercraft is also disclosed.

A pontoon boat includes port and starboard pontoons and cross members connecting the pontoons. A shock absorber may be installed at each point of connection of the pontoons to the cross members. A cross member may be embodied as a double-webbed beam having first and second parallel flanges and first and second webs disposed between and connected to the flanges. Each pontoon may include a two-stage lifting strake having a first surface and a second surface inclined from the first surface.